Formation of stable agrocenoses of corn hybrids in a sharply continental climate

Abstract

The article considers the factors influencing the stability of agrocenoses of corn hybrids in the forest-steppe zone of the Krasnoyarsk Territory. The researches were carried out for three years in the zone of sharply continental climate of the Krasnoyarsk forest-steppe on leached low- and medium-thick chernozems. The main factors influencing the stability of agrocenoses of corn hybrids were determined. So the factor of climatic conditions affects the corn hybrids, its influence is no more than 14%. The factor of pre-sowing preparation and the precursor (cereals and fallow) showed not significant effect, no more than 2%, on the formation of agrocenoses of corn hybrids. Thus, the factor genotype of the hybrid was fundamental in determining its significance for agrocenoses. The main biometric factor that determines the productivity of corn hybrids was also identified. Correlation analysis made it possible to reveal the influence of the average plant height on the productivity index of corn, as well as on the ear weight. But at the same time, it was determined that the mass of corn ears decreases with an increase in the average height, in the structure of the crop agrocenoses of corn hybrids.

Comprehensive Assessment of the Multi-cropping Effect on the Agroecosystems

“…According to Litvinova et al [28], correlation analysis revealed a significant effect of maize height on green biomass yield. It was found that as maize height increases, the cob biomass decreases, which significantly decreases the total green biomass.…”

Comprehensive Assessment of the Effect of Multi-Cropping on Agroecosystems

“…The average crop height was highly affected by the cultivation of single crops, as the scores for single crops of maize and hemp were well above the assessment threshold, whereas the score for the single faba bean crop was significantly lower (Figure 2). A correlation analysis by Litvinova et al [26] revealed a significant effect of maize height on green biomass yield. They found that as maize height increased, the cob biomass decreased, which significantly decreased the total green biomass.…”

“…The assessment scores for these crops were above the threshold. The CO2 score A correlation analysis by Litvinova et al [26] revealed a significant effect of maize height on green biomass yield. They found that as maize height increased, the cob biomass decreased, which significantly decreased the total green biomass.…”